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Biology, 21.06.2019 20:00
Researchers randomly divide participants into groups. each group takes a different amount of omega-3 fatty acid supplements daily for a month. one group receives a placebo. the researchers measure the impact on cholesterol levels in the blood. what is the purpose of random assignment in this experiment? a, to produce treatment groups with similar characteristics b, to ensure that all people with high cholesterol have an equal chance of being selected for the study c, to increase the accuracy of the research results and prevent skewness in the data
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Biology, 21.06.2019 23:00
Classify the structures as homologous or analogous, depending on their structure and function.
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Biology, 22.06.2019 14:40
Modern sea star larvae resemble some primitive vertebrate larvae. this similarity may suggest that primitive vertebrates
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